Rotary brush



Feb- 3, 1959 Y D. KAzlMlERczAK 2,871,495

ROTARY BRUSH Filed May 3. 1957 INVENTOR.

DYomzY KAzmlEzczAK.

ATTORNEY-S United Statesatent ROTARY BRUsHL Dyonizy Kzimerczak';Stockertown, Pa. Application May 3, 1957, serial ism-656,944.. s`claims.l (C1. -180) This invention relates to improvements in brushesand is particularly directed to an. improved andk novel brush for usewith a machine for treating or. processing surfaces. More particularly,the present inventionrelates-to anew rotary brush for use withl amachinefor applying-tile mastic to aoor in the application of oor tileAA primary object of the present invention is to provilel a rotary brush,which is constructedI so that a` fluent mae, ferial can be deliveredthrough `the brushhead,as.the brush rotates, for immediate and speedyapplication of the material to a surface.L

Another important object of the present invention is to provide a rotarybrush, which is adapted to be attached to a rotary shaft of a surfacetreating machine and which is provided with an opening, that-'isdisposedinwardly ofithe bristles of the brush, for ,the passage-zot' asurf-acetreating fluent material through. the brush head to thebristles. l y i, i

A furtherV important object of the present invention is to provide arotary brush, which includes a brush head, that is circular and has anundersurface from which bristles depend, the bristles being disposedabout the peripheral edge portion of the undersurface and the brush headbeing formed with an arcuate slot, that is disposed concentric to thecenter of the brush head and is arranged between the bristles and thecenter, such slot being provided for the delivery or passage of fluentmaterial through the brush head to the bristles.

A still further important object of the present invention is to providea rotary brush, which includes a brush head having an arcuate slotformed therein and arranged concentric to the center thereof and havingbristles depending from its underside, the bristles being arranged sothat the bristles, which are concentric to the slot, are of less radialthickness than the bristles, which are disposed diametrically oppositethe slo-t, and the slot being arranged relative to the bristles so thatya iluent material passing through the slot is immediately collected andspread by the bristles.

The foregoing and ancillary objects, including the provision of asturdy, inexpensive and easily constructed brush are attained by thisinvention, the preferred embodiment of which is set forth in thefollowing descript-ion and illustrated in the accompanying drawings,where- Figure 1 is a view in perspective of the brush of this invention,showing the underside thereof and illustrating in particular the novelfeatures of the slot and the relationship relative thereto of thebr-istles, and,

Figure 2 is a vertical, cross-sectional view, taken on line 2-2 ofFigure l.

`Referring now more particularly to the accompanying drawing, the brush10 is particularly, though not exclusively, designed for use with amachine for treating a surface, specifically, for use with a machine forapplying a mastic to a floor surface,'preparatory to the laying of tileon the surface. Obviously, the intended use of the brush is not to berestrictively considered, since the brush 2 mayyb'e 'used with. anymachine for the treatment of any surface and the novel features thereofwill be equally well adapted for use with any type `of surface-treatingmachine, wherein a fluent material is to be spread over a surface.

Thebrush 10 is .of the rotary type and includes a circularzbrush head12, whichhas a center opening 14. Attaching means 16 is suitably mounted-inthe center opening 14 andis vprovided for attaching the brush tothe-ro taryshaft of a surface-treating machine, such as the machineldisclosed in my co-pending application, Serial No'. 656,792, tiled'May3, 1957.

. The brush head 12 includes a flat underside or undersurface 18,.which'is formed with pockets 20, within which the yinner ends .22 ofbristles 24 are socketed. It is to be noted, las shown in.- Figure 1,.that the bristles -24 are arrangedaround the peripheral edge portion ofthe underside-of vthebrush head and are disposed in a'circular pattern,with atvarying radialjthickness as willbe described.

t The brushheadlZ is fo-rmed with an arcuate slot 26, whiclris disposed`Yconcentric to the center opening 14-of the brush ,h'ead` and whichyterminates in curved end portionsZS, theslot exten-ding substantially180 degrees and being formed insubstantially one-half of the brushhead.l

The sl'ot is formedvertically in the brush head and is pro videdfor thepassagevof the surface-treating uent material` through the brush head tothe bristles, as the brush head is: rotated `by-the rotar-y shaft.-

Therbri'stles'areLformed 'in' two groups,j 30 and '32, as showninFigure'l of the drawing; The bristles of vthe group 30;are arrangedconcentric to'tlie slot 26 and 'extendoco-exten'sively 'with theslot,that is',A from one end of the slot to the other end around theperipheral edge of the brush head. The bristles Sti are arranged in asingle row and are of a similar and constant radial thickness. Thebristles of the group 32 extend from the ends 2S of the slot and arediametrically opposed to the slot and to the bristles of the group 30.The bristles at the ends of the group arrangement 32 are of slightlygreater radial extent than the bristles of the group 3l) and thebristles, forming the group 32, gradually increase in radial thickness,with the center portion of the group or the bristles at the ycenter ofthe group 32 being of a similar radial thickness, which is considerablygreater than the radial thickness of the bristles formed inthe group 3G.It is to be particularly noted that, as the brush rotates, the fluentmaterial passing through the slot 26 in the brush head will beimmediately picked up by the end bristles forming the group 32 and thebristles in the group 32 will immediately serve to spread the fluentmaterial over the surface, the bristles in the group 30 cooperating withthe bristles in the group 32 to prevent the flow of the fluent materialbeyond the peripheral edge portions of the brush, so that all of thematerial is kept within the contines of the brush and is effectively andcompletely spread over the surface by the brush. In use, the brush isattached to a rotary shaft of a surface-treating or processing machineby means of the attaching means 16. As the brush rotates, the fluentmaterial is delivered by the machine through the slot or opening 26, thedelivery being timed in relation to the rotation of the brush. As thematerial falls through the slot 26, it is immediately gathered andspread by the end bristles of the group 32, with the bristles of thegroup 30 serving to also spread the material and cooperating with thebristles of the group 32 to retain the material within the confines ofthe brush, so as to prevent the material from being splattered beyondthe brush and so as to smoothly and evenly spread the fluent materialover the surface.

While the preferred embodiment of this invention has been described andillustrated herein, other forms may be s 2,871,495 s Y realized, lascome within the scope ofthe appended claims. l i

- 'the width of the slot.

What is claimed is:

l. A rotary brush for attachment to an apparatus for the application offluent materials to a surface comprising a circular brush head having anunderside, bristles`,de' pending from the underside and arranged aroundthe-pe-v ripheral edge thereof, attaching meansl carried by the centerof the `brush head for attaching the brush toa rotary shaft, said brushhead having -an arcuate slot formed vertically therethrough for thepassage of a uent mate'- rial through the brush head in timed relationto the rotation of the brush and said slot being arranged concentric tothe center of the brush head and disposed between the center and aportion of the bristles, said bristles being arranged in two groups, oneof said groups being disposed concentric to and space-d outwardly fromthe slot and the bristles of such group being of constant and similarradial thickness and the bristles of the second group being of greaterradial thickness than the bristles of the first group and the endbristles of the second group being extended inwardly of the brush headso as to lie Within the same circle as the slot, whereby the endbristles confront the ends of the slot. f

2. A rotary brush comprising `a circular brush head having attachingmeans provided at its center for securing the brush to a rotary shaft,said brush head having an underside provided with a plurality ofbristles, which depend therefrom and which are arranged around theperipheral edge portion thereof, said brush head having an larcuate slotformed vertically therethrough and said slot being disposed concentricto the center of the brush head, said bristles being divided into twogroups, one of said groups being arranged concentric to and spacedoutwardly from the slot and the other group being diametrically opposedfrom the slot, thebristles of the other group being of a radial extentsubstantially equal to the combined radial extent of the bristles of rstgroup and 3. A rotary brush for attachment to an apparatus for theapplication of fluent materials to a surface comprising a circular brushhead having a working side and an opposing other side, bristlesextending axially from the working side and arranged around theperipheral edge thereof, attaching means carried by the center of thebrush head and projecting y,axially from the opposing other side forattachment to an 'operating shaft, said brush head having an arcuateslot formed therethrough and extending through the working side and theopposing other side for the passage-of a fluent material from the otherside through the brush head and out through the working side n timedrelation to the rotation of the brush, said slot being arrangedconcentric to the center of the brush head and disposed between thecenter and a portion of the bristles, said bristles being arranged intwo groups, one of said groups being disposed concentric to and spacedoutwardly from the slot and therbristles of such group being of constantand similar radial thickness, the other of two groups having itsbristles arranged so as to be of ygreater radial thickness than thebristles of the rst group and the endmost bristles of the other groupbeing extended inwardly of the brush head so as to lie within the samecircles as the slot, whereby the endmost bristlesof such group confrontthe ends of the slot.

References Cited in the le of this patent UNITED STATES PATENTS1,654,036

